Tango dancing in smart broadcast (8)
I believe the answer is:
transmit
'broadcast' is the definition.
(I know that broadcast can be written as transmit)
'tango dancing in smart' is the wordplay.
'tango' becomes 't' (phonetic alphabet: alpha, bravo, charlie etc.).
'dancing' is an anagram indicator.
'in'+'smart'='insmart'
'insmart' is an anagram of 'ransmit'.
't'+'ransmit'='TRANSMIT'
(Other definitions for transmit that I've seen before include "Communicate (an idea)" , "Send from one person to another, or broadcast" , "Broadcast (a signal)" , "Send from one place to another" , "Send from one to another, electronically say" .)